1902074192242 has 12 divisors (see below), whose sum is σ = 3318925376430. Its totient is φ = 815174653776.

The previous prime is 1902074192201. The next prime is 1902074192243. The reversal of 1902074192242 is 2422914702091.

It can be written as a sum of positive squares in only one way, i.e., 1870627908681 + 31446283561 = 1367709^2 + 177331^2 .

It is not an unprimeable number, because it can be changed into a prime (1902074192243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9704460067 + ... + 9704460262.

Almost surely, 2^{1902074192242} is an apocalyptic number.

1902074192242 is a deficient number, since it is larger than the sum of its proper divisors (1416851184188).

1902074192242 is a wasteful number, since it uses less digits than its factorization.

1902074192242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19408920345 (or 19408920338 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The spelling of 1902074192242 in words is "one trillion, nine hundred two billion, seventy-four million, one hundred ninety-two thousand, two hundred forty-two".